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Trophic pyramid HTML5


An ecological pyramid is a quantitative representation of the trophic levels of a food chain.

There are three types of ecological pyramids:

  • Pyramid of numbers
  • Pyramid of biomass
  • Pyramid of energies

The detrivores and decomposers are not always represented in these pyramids but they play an essential role in the cycle of material.

The pyramid of toxins shows the bioaccumulation in individual organisms in a food chain. Its shape is inversed.

Learning goals

  • Understand the different ways to quantify the tropic relationships of a food chain

Learn more

A food chain refers to in general, 3 or 4 tropic levels. Each trophic level obtains its energy from the inferior levels. The first level functions from solar energy. It groups autotrophic

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